Oxygen
Oxygen is a colorless, odorless and tasteless gas with the chemical symbol O2. It is a vital element for the survival of life and makes up a large part of the atmosphere.
Physical Properties
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Oxygen is a colorless gas at room temperature and atmospheric pressure.
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It has a boiling point of -183 °C and a freezing point of -219 °C.
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Oxygen is the second densest gas in the atmosphere, behind nitrogen.
Production
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Oxygen can be obtained by separation from the atmosphere or by industrial processes.
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Fractional distillation is a widely used method of separating oxygen from the atmosphere. In this process, liquid air is used to separate gases at different temperatures.
Areas of Use
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Medical Use: Oxygen is used in medical fields by supplying it to patients through respirators and oxygen cylinders.
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Metal Cutting and Welding: Oxygen is used for cutting and welding metals. High temperatures can be achieved when oxygen is combined with a flammable gas.
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Chemical Industry: Oxygen is used to accelerate oxidation reactions in many chemical processes.
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Space and Aviation: Oxygen is used in rocket fuels and oxygen masks in airplanes.
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Food Industry: It is used in food packages, especially in the packaging of fresh meat, fish or cut fruit and vegetables.
General Features
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Oxygen is essential for cellular respiration of living organisms. Cells produce energy by burning oxygen.
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The respiratory system ensures that oxygen is taken into the body and carbon dioxide is removed.
Safety
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Oxygen can be flammable when in contact with combustible materials. It must not be brought near open flames or fire.
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Oxygen cylinders and systems must be designed and used in accordance with safety standards.
Oxygen is a vital gas and is used in many industries and medical applications. However, safety rules must be observed during its use, as it can be dangerous due to its flammable properties.